Concept:Mass movement is the downslope transfer of weathered materials caused mainly by gravity.
Explanation:Weathering only breaks down rocks in place; it does not move the broken materials.
When weathered materials, soil, or regolith slide or creep down a slope, the force responsible is gravity.
This process is known as mass movement or mass wasting.
It occurs without the direct action of moving water, wind, or ice as the primary transporting agent.
Therefore, the correct term that fits the blank is mass movement.
Answer:B. mass movement